pseudocode

I recommend looking at the “Introduction to Algorithms” book (by Cormen, Leiserson and Rivest). I’ve always found its pseudo-code description of algorithms very clear and consistent. An example: DIJKSTRA(G, w, s) 1 INITIALIZE-SINGLE-SOURCE(G, s) 2 S ← Ø 3 Q ← V[G] 4 while Q ≠ Ø 5 do u ← EXTRACT-MIN(Q) 6 S ← … Read more

You can check if the area of the ABC triangle is 0: [ Ax * (By – Cy) + Bx * (Cy – Ay) + Cx * (Ay – By) ] / 2 Of course, you don’t actually need to divide by 2.